package cn.tta.interceptor;

import cn.tta.common.constant.JwtClaimsConstant;
import cn.tta.common.context.BaseContext;
import cn.tta.common.properties.JwtProperties;
import cn.tta.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

/**
 *jwt令牌拦截器
 */
@Component
@Slf4j
public class JwtTokenAdminInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtProperties jwtProperties;


    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,Object handler) {
//        判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            // 当前拦截到的不是动态方法，直接放行
            return true;
        }

        // 从请求头获取令牌
        String token = request.getHeader(jwtProperties.getAdminTokenName());

        // 校验令牌
        try {
            log.info("jwt校验：{}",token);
            Claims claims = JwtUtil.parseJWT(jwtProperties.getAdminSecretKey(), token);
            Long empId = Long.valueOf(claims.get(JwtClaimsConstant.EMP_ID).toString());
            log.info("当前员工id:{}",empId);
            BaseContext.setCurrentId(empId);
            return true;
        }catch (Exception e) {
            // 不通过 响应401
            response.setStatus(401);
            return false;
        }
    }
}
